Circular speakerphone



FIG. 1 is a front-right-top perspective view of a circular speakerphone;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a right view thereof; and,

FIG. 7 is a left view thereof.

The broken line showing of environmental features in FIGS. 4, 5, and 6 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a circular speakerphone, as shown and described. 